1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Fuel pump too noisy!

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Old 02-27-09, 10:35 PM
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Fuel pump too noisy!

Alright... I've been running a Holley Blue? fuel pump for awhile now and it's just plain loud! All I hear at idle is WEEEEEEEEEEEE. I have all interior panels and even a little additional piece of bedding foam under the carpet above the pump.

Is there anything else I can do to make this beast quieter? You can't hear it from the outside. Just the inside. Is there perhaps a rubber insulator I can put on the mounts? Could it be resonating off the car body?
Old 02-28-09, 12:01 AM
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Yes, I believe Holley supplies a mounting kit with rubber insulators. Or you can go down to your local hardware store and make your own.
Old 02-28-09, 07:52 PM
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Have you heard of this pump being noisy before?

I'll check into some little rubber donuts or something to mount it with.
Old 02-28-09, 08:42 PM
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holley pumps are known for being loud
Old 02-28-09, 09:29 PM
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Mounted the pump on the back side of the storage bin, didn't you. Might as well mount it on a drum skin. You can add a 1/8" steel stiffening plate to the inside of the bin, (6"X6") along with standoff rubber bushings or even an old, thick mouse pad.
Old 02-28-09, 09:36 PM
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I forgot that is Napa where I saw the rubber mounting kit for the carter pumps. Should work on the Holley also since they mount pretty much the same.

Last edited by Rx-7Doctor; 03-01-09 at 04:01 PM.
Old 02-28-09, 10:27 PM
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It's mounted outside under the driver side dip in the rear of the seat.

Storage bins?? I wish my SA had bins! I thought about getting FB bins.
Old 03-01-09, 08:19 AM
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That's the same spot as the bins, has the same drum effect. Keep in mind that most aftermarket pumps need to be mounted in a true vertical position, which the bin/seat pan is not. If you want it queter, either mount with a sound absorbing material or on the frame rail. Frame rail mounting usually require that cut/check valve be moved up.
Old 03-02-09, 07:25 PM
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just run to Wal-Mart and buy a pair of rubber slippers or thongs for $2.50. Use it as an insulator.
Old 03-02-09, 11:07 PM
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I just mounted mine where the stock fuel pump was and yes it is noisy but not that bad. It is a diaphram type pump not a rotor type pump so it is going to be noisy.
Old 03-04-09, 10:48 AM
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Try a carter
Old 03-04-09, 12:20 PM
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Why, Carters tend to be even louder than the Holleys. If one wants a quiet pump, spend the bucks for gerotor pump.
Old 03-04-09, 02:35 PM
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Or... since I'm using a Nikki perhaps I should sell it to someone running a Holley or Weber and find a factory pump... That way I could do away with my pressure regulator right? Just connect the outlet directly into the Nikki inlet? No regulators?

The car came with a 45DCOE so that's why it has the Holley pump and FPR.
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